Ezra pleukharp



(Nb Model.)

E. PLEUKHARP.

SLIDE EOE EXTENSION TABLES.

No. 474,186. Patented May 3, 1892.

nu n U l I Nu t?, n.. my; :i l 1 I im I i IIFI" EZRA `PLEUKHARP, OFROOKFORD,

PATENT OFFICE.

ILLINOIS, ASSIGNOR TO JOSHUA E.

LAHMAN AND EDGAR R. LAIIMAN, OF SAME PLACE.

SLIDE FOR EXTENSION-TABLES.

SPECIFICATION forming part of lLetters Patent No. 474,186, dated May 3,1892.

Application filed September 9, 1891. Serial No. 405,191. (No model.)

.To all whom it may concern;

Be it known that I, EzRA PLEUKHAEP, a citizen of the United States,residing at Rockford, in the county of Winnebago and State of Illinois,have invented certain new and useful Improvements in Slides forExtension-Tables; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled inthe art to which it appertains to make and use thesame.

My present invention relates to improvements in slides forextension-tables; and the object of the invention is to provide meanswhereby the upper surface or edge of the sections of the slide ismaintained in a truehorizontal position to obviate the objection of theslide sagging in the middle; and a further object is to insure the easymovement of the sections and prevent the same from binding whenextending or folding the sections.

With these ends in View my invention consists in the combination, withthe sections, each having a longitudinal T-shaped groove, of theconnecting casting or iron between the adjacent sections, said castingor iron being rigidly secured at one side to one section and having itsother side joined to the fixed side by transverse connecting-webs, whichare arranged inthe same horizontal plane and which are fitted andoperate in the reduced portions of the grooves, said webs formingbearings for the movable section of the slide and operating to keep thesections in their proper relative positions, so that sagging is avoided.The transverse webs are further provided in their upper edges withgrooves or recesses to receive the upper flange on the movable sectionof the slide, and the movable side of the casting or iron is made thin,so that the slide `member or section can move freely without anytendency to bind, all as will be hereinafter more fully described andpointed out.

I have illustrated my improvement in the accompanying drawings, appliedto and used in connection with a slide consisting of three sections anda proper number of connecting castings or irons, and in the drawingsFigure I is a perspective View `of my improved slide, showing the sameextended. Fig. II is an end view showing the slide folded.

Fig. III is a vertical transverse section through the sections ormembers and the irons in the position indicated in Fig. II. Fig. IV is adetail perspective view of the casting or iron removed from the membersof the slide. Fig. V is a horizontal sectional view taken longitudinallythrough a portion of two members 2 3 of a table-slide, showing thecastings or irons in elevation. Fig. VI is an elevation of the castingor iron, taken from the narrow side 15 thereof; Fig. VII is a horizontalsectional View similar to Fig. V, taken longitudinally through thecontiguous ends of the members l 2 of the slide to show the castings orirons l0 Il, which connect said members.

Like numerals of reference denote corresponding parts in all the figuresof the drawings-, referring to which- I, 2, and 3 designate the sectionsor members of my improved table-slide. The middle member or section 2 ofthe slide is pro` vided in its vertical faces with the T-shaped grooves4 4r', one on each side, while the outer members l 3 are each providedwith a single groove 5 6, respectively, the grooves being on the innerfaces of the member and arranged to align or coincide with the grooveson the faces of the middle section or member, as indicated veryclearlyin Figs. II and. III.

The member l of the slide is connected at one end to the middle member 2by means of a casting or iron lO, which is xed or secured in groove 5 ofthe member l and Works or slides freely in the groove/l of the member 2,

while the other end of the members l 2 are connected by means of asimilar casting Il, which is ixed in the groove 4 of the member 2 andslides freely in the groove 5 of the member l. The other outside member3 and the middle member 2 are similarly connected together by means ofthe irons or castings l2 13, the former casting 12 being secured in thegroove 6 of the member 3 and working freely in the groove il of themiddle member 2 at one end and the other casting 13 being secured in thegroove t of the member 2 and working freely in thegroove 6 of theoutside member 3. The castingsfare similar in construction and securedto the members or sections of the slide in a similar manner, and I willnow proceed to describe in detail the casting, its method of securement,and its operation.

The casting consists of the vertical plates 15 16 and the horizontaltransverse webs 17 18, all of which are cast or formed of a single pieceof metal. The two vertical plates are arranged parallel with each other,and they are joined at the ends by the transverse integral webs. The twowebs are arranged in the same horizontal plane-that is to say, the upperedges of the webs are in the same plane and the lower edges of the websare likewise aligned; but the vertical plates are not aligned throughouttheir length.

The Vertical plate 15 is narrower in width than its fellow plate 1G, andsaid plate 15 is provided at one end with a depending flange 20 and atits other end with an upward-eX- tending fiange 2l, said flanges 2O 21fitting in the groove in one member of the slide and serving to hold onepart or side of the casting in the proper slide member. The 'other plate16 has a flange 22 on its upper side coincident with the ange 21, andthe wide plate 16 is further formed with a fullness at 23 on its lowerside below the webs, which lug 23 is of equal length to the lug 20 onthe opposite side of the casting, the lug 23 thereby making the plate 16somewhat wider than the plate 15, whereby the plate 16 serves in a greatmeasure to uphold the sectionsor prevent them from sagging. The plate 16being wider than the plate 15, it extends below the lower edge'of theplate 15, as shown in Fig. 1V, and said lower edge of the plate 16 isbeveled or rounded off at 24E at one end beyond the lug 20, and in thecenter of the wide plate 16 below the plane of the lower 'edge of theplate 15 is formed a transverse notch 25, which is adapted to receivethe fastening pin or dowel 26, which is drivenfthrough the slide andinto the notch in the plate 16 of the casting.

The casting is designed to be rigidly secured at one side to one sectionor member of the slide and its other side is designed to move freely inthe other fellow section of the slide. To accomplish these ends in asatisfactory and efficient manner, I make the side of the casting whichis to be secured to one section quite thick, so as to completely fillthe groove therein, while the moving side of the casting is made thinnerto enable it to ride freely in the groove of the moving or othersection. rllhus the plate 16 is made somewhat thicker than the plate 15,and the former plate is fitted tightly in the groove of one section, soas to completely fill the same, while the plate 15 fits somewhat easilyin the other groove of the proper section to enable it to have easymovement.

The transverse webs 17 18 are made of such width adjacent to the thickplate 16 as to completely fill the narrow part of the groove in thesection or member to which the casting is secured, while a groove orrecess 27 is cut in the upper edge of each web to receive the upper[iange formed by the groove in the other section or member of the slide,such grooves 27 27 in the webs being in horizontal alignment and servingto permit a limited play, which insures easy movement of the ange on themoving section of the slide, thus obviating binding between the flangesand the casting.

In fitting my improved slide I thrust the thick side or plate 16 of thecasting in the groove at one end of one section and secure the castingin place by the dowel-pin, after which the thin side or plate 15 isfitted in the groove in the adjacent section or member, with the upperiiange fitting the aligned recesses 27. The transverse webs of thecasting ride on the flanges formed by the grooves in the sections ormembers of the slide, and said webs serve as bearings to prevent thesections or members from sagging when they areextended, whereby theslide is prevented from sinking or being depressed at the middle underthe load or weight imposed on the table. p

The operation and advantages of my invention will be readily understoodand appreciated by those skilled in the art from the foregoingdescription, taken in connection with the drawings.

Although I have described and shown only three sections or members as anembodiment of lmy invention, yet I would have it understood that I donot confine myself to any particular number, and if the number isincreased the middle or intermediate sections should be grooved on bothsides in the manner similar to the section 2 of the slide herein shown;nor do I limit myself to the exact form and proportion of parts hereinshown and described, nor to the details of construction, as .Iam awarethat modiicationscan be made therein without departing from the spiritof my invention.

Having thusdescribed my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, with the slides having on theiwil opposing faces thecoincident T- grooves of uniform width, of the metallic connection orcasting having its longitudinal side plates 15 16 tting in the enlargedparts of the grooves in said slides, said casting provided with theintegral transverse webs 17 18, having the aligned notches 27 intheirupper edges, the lower edges of. both webs bearing on the edges of thegrooved slides, and the notches 27 in said webs affording a loose bear-IOO IIO

provided with the aligned grooves 27 in their ro upper edges, as setforth.

In testimony whereof I affix my signature in presence of two Witnesses.

EZRA PLEUKHARP.

IVitnesses: 1

EMMA L. SCHILLE, ANNA K. WILLIAMS.

